Yep, meant what would be the best macro algea if one decided to try it in a main tank. Does chaeto need light 24/7? Will it go sexual (I think that is the term)? That, I believe, could be a bad thing for the tank. Is that correct? All this still confuses me, still very green behind the ears on this topic. Anything you could add would be great, got a pic? Know any other names for it to help with a search? Will L I only ask b/c it also will help you in your choice also.